Empty list is not None

helpers/radarr.py

@@ -41,7 +41,7 @@ def remove_existing_movies_from_trakt_list(radarr_movies, trakt_movies, callback
     try:
         # turn radarr movies result into a dict with tmdb id as keys
         processed_movies = movies_to_tmdb_dict(radarr_movies)
-        if not processed_movies:
+        if processed_movies is None:
             return None
 
         # loop list adding to movies that do not already exist

helpers/sonarr.py

@@ -67,19 +67,19 @@ def series_to_tvdb_dict(sonarr_series):
 def remove_existing_series_from_trakt_list(sonarr_series, trakt_series, callback=None):
     new_series_list = []
 
-    if not sonarr_series or not trakt_series:
+    if sonarr_series is None or trakt_series is None:
         log.error("Inappropriate parameters were supplied.")
         return None
 
     try:
         # clean up trakt_series list
         trakt_series = filter_trakt_series_list(trakt_series, callback)
-        if not trakt_series:
+        if trakt_series is None:
             return None
 
         # turn sonarr series result into a dict with tvdb id as keys
         processed_series = series_to_tvdb_dict(sonarr_series)
-        if not processed_series:
+        if processed_series is None:
             return None
 
         # loop list adding to series that do not already exist

media/trakt.py

@@ -218,11 +218,8 @@ class Trakt:
                     log.error("Failed to retrieve %s %s, request response: %d", type_name, object_name, req.status_code)
                     break
 
-            if len(processed):
-                log.debug("Found %d %s %s", len(processed), type_name, object_name)
-                return processed
-
-            return None
+            log.debug("Found %d %s %s", len(processed), type_name, object_name)
+            return processed
         except Exception:
             log.exception("Exception retrieving %s %s: ", type_name, object_name)
         return None

traktarr.py

@@ -547,7 +547,7 @@ def shows(
     else:
         trakt_objects_list = trakt.get_user_list_shows(list_type, authenticate_user)
 
-    if not trakt_objects_list:
+    if trakt_objects_list is None:
         log.error("Aborting due to failure to retrieve Trakt \'%s\' shows list.", list_type.capitalize())
         if notifications:
             callback_notify(